Question

Roughage is indigestible, yet it should be present in our diet. why ?​

Answer 1

Roughage has no nutrients in it yet it is necessary to include it in our diet as it is important for keeping the digestive tract working smoothly. Since we do not digest it, the fiber in food passes into the intestine and absorbs water. The undigested fiber creates "bulk" so the muscles in the intestine can push waste out of the body.

Answer 2

Answer:

because the roughage contain water which complete our requirements of water